<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
         {{msg}}
    </div>
</body>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script>
    const vm = new Vue({
        el:"#app",
        data:{
           msg:"你好狗蛋" 
        }
    })
</script>
</html>